1z0-1109-23 Exam Dumps - Oracle Cloud Infrastructure 2023 DevOps Professional

The statement that is true about managing cluster add-ons in OCI OKE Cluster is that when creating a new cluster, essential cluster add-ons cannot be disabled. A cluster add-on is a software component that provides additional functionality or integration for your OKE cluster. OCI OKE Cluster supports two types of cluster add-ons: essential and optional. Essential cluster add-ons are required for your cluster to function properly and cannot be disabled or customized. These include CoreDNS, Kubernetes Dashboard, Metrics Server, and WebLogic Operator. Optional cluster add-ons are not required for your cluster to function but provide additional features or benefits. These include Kiali Operator, Istio Operator, Vault Agent Injector, and Vault KMS Plugin. You can enable or disable optional cluster add-ons as per your needs. Verified References: [Cluster Add-Ons - Oracle Cloud Infrastructure Container Engine for Kubernetes], [Managing Cluster Add-Ons - Oracle Cloud Infrastructure Container Engine for Kubernetes]

To patch a server application running on 100 web servers, you can use Ansible and leverage a playbook. A playbook is a YAML file that defines the desired state of your infrastructure, such as packages, services, files, etc. You can use a playbook to specify the tasks that need to be performed on each server, such as updating the application, restarting the service, etc. You can also execute the playbook against a group of web servers, as defined in the inventory. The inventory is a file that lists the hosts and groups that Ansible can manage. By using a playbook and an inventory, you can automate the patching process and ensure consistency across all servers. Verified References: [Playbooks - Ansible Documentation], [Working with Inventory - Ansible Documentation]

The OCI service that is best suited for developing and testing isolated web applications or RESTful APIs using Node.js and MongoDB is Container Instances. Container Instances is a service that allows you to run containers without managing any servers. You can use Container Instances to create and manage single-container or multi-container deployments using Docker images. You can also use Container Instances to connect your containers to other OCI services, such as Object Storage, Database, or Networking. Container Instances is simple, quick, and secure, as it provides built-in isolation, encryption, and authentication for your containers. Verified References: [Container Instances - Oracle Cloud Infrastructure Developer Tools], [Creating Container Instances - Oracle Cloud Infrastructure Developer Tools]

Explanation

As the OKE cluster administrator, you can define permissions to restrict pod-to-pod communications except as explicitly allowed by using Network Policies. Network Policies are a Kubernetes feature that allows you to define rules for network traffic within the cluster. They provide fine-grained control over ingress (incoming) and egress (outgoing) traffic between pods. By creating Network Policies, you can specify the allowed communication paths between pods based on various criteria such as source and destination pods, namespaces, IP addresses, ports, and protocols. This allows you to enforce security and isolation within your OKE cluster, ensuring that pods can only communicate with authorized pods or services. RBAC Roles and IAM Policies are used to manage access control and permissions for managing and interacting with the cluster itself, but they do not directly control pod-to-pod communications. Security Lists, on the other hand, are associated with VCN (Virtual Cloud Network) resources and control traffic at the subnet level, not at the pod level within the OKE cluster. Reference: https://docs.oracle.com/en-us/iaas/Content/Security/Reference/oke_security.htm

Explanation

"The OCI capability that can help achieve the requirement of archiving logging data into OCI Object Storage is the ""Service Connector Hub."" The Service Connector Hub in OCI enables you to configure connections and workflows between different OCI services. In this case, you can create a connection between the OCI Logging service and OCI Object Storage using the Service Connector Hub. By setting up a connection between these services, you can define a workflow to automatically transfer the logs collected by the Logging service to Object Storage for archiving. This ensures that the logging data is securely stored and easily accessible for future analysis or compliance purposes. The Logging Query capability allows you to search and analyze logs, but it does not directly address the requirement of archiving the logging data into Object Storage. ObjectCollectionRule is not a valid OCI capability and does not pertain to the archiving of logging data into Object Storage. IAM policies are used to manage access and permissions within OCI, but they do not directly pro-vide the capability to archive logging data into Object Storage." Reference: https://docs.oracle.com/en-us/iaas/Content/service-connector-hub/archivelogs.htm